AndroidRuntime.cpp revision c0895236e55fbbcb6600e02291196e721dec14b3
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define ATRACE_TAG ATRACE_TAG_DALVIK 18#define LOG_TAG "AndroidRuntime" 19#define LOG_NDEBUG 1 20 21#include <android_runtime/AndroidRuntime.h> 22#include <binder/IBinder.h> 23#include <binder/IPCThreadState.h> 24#include <binder/IServiceManager.h> 25#include <utils/Log.h> 26#include <utils/misc.h> 27#include <utils/Trace.h> 28#include <binder/Parcel.h> 29#include <utils/threads.h> 30#include <cutils/properties.h> 31 32#include <SkGraphics.h> 33 34#include "jni.h" 35#include <nativehelper/JNIHelp.h> 36#include <nativehelper/JniInvocation.h> 37#include "android_util_Binder.h" 38 39#include <stdio.h> 40#include <signal.h> 41#include <sys/stat.h> 42#include <sys/types.h> 43#include <signal.h> 44#include <dirent.h> 45#include <assert.h> 46 47#include <string> 48#include <vector> 49 50 51using namespace android; 52 53extern int register_android_os_Binder(JNIEnv* env); 54extern int register_android_os_Process(JNIEnv* env); 55extern int register_android_graphics_Bitmap(JNIEnv*); 56extern int register_android_graphics_BitmapFactory(JNIEnv*); 57extern int register_android_graphics_BitmapRegionDecoder(JNIEnv*); 58extern int register_android_graphics_Camera(JNIEnv* env); 59extern int register_android_graphics_CreateJavaOutputStreamAdaptor(JNIEnv* env); 60extern int register_android_graphics_GraphicBuffer(JNIEnv* env); 61extern int register_android_graphics_Graphics(JNIEnv* env); 62extern int register_android_graphics_Interpolator(JNIEnv* env); 63extern int register_android_graphics_MaskFilter(JNIEnv* env); 64extern int register_android_graphics_Movie(JNIEnv* env); 65extern int register_android_graphics_NinePatch(JNIEnv*); 66extern int register_android_graphics_PathEffect(JNIEnv* env); 67extern int register_android_graphics_Shader(JNIEnv* env); 68extern int register_android_graphics_Typeface(JNIEnv* env); 69extern int register_android_graphics_YuvImage(JNIEnv* env); 70 71extern int register_com_google_android_gles_jni_EGLImpl(JNIEnv* env); 72extern int register_com_google_android_gles_jni_GLImpl(JNIEnv* env); 73extern int register_android_opengl_jni_EGL14(JNIEnv* env); 74extern int register_android_opengl_jni_EGLExt(JNIEnv* env); 75extern int register_android_opengl_jni_GLES10(JNIEnv* env); 76extern int register_android_opengl_jni_GLES10Ext(JNIEnv* env); 77extern int register_android_opengl_jni_GLES11(JNIEnv* env); 78extern int register_android_opengl_jni_GLES11Ext(JNIEnv* env); 79extern int register_android_opengl_jni_GLES20(JNIEnv* env); 80extern int register_android_opengl_jni_GLES30(JNIEnv* env); 81extern int register_android_opengl_jni_GLES31(JNIEnv* env); 82extern int register_android_opengl_jni_GLES31Ext(JNIEnv* env); 83extern int register_android_opengl_jni_GLES32(JNIEnv* env); 84 85extern int register_android_hardware_Camera(JNIEnv *env); 86extern int register_android_hardware_camera2_CameraMetadata(JNIEnv *env); 87extern int register_android_hardware_camera2_legacy_LegacyCameraDevice(JNIEnv *env); 88extern int register_android_hardware_camera2_legacy_PerfMeasurement(JNIEnv *env); 89extern int register_android_hardware_camera2_DngCreator(JNIEnv *env); 90extern int register_android_hardware_HardwareBuffer(JNIEnv *env); 91extern int register_android_hardware_SensorManager(JNIEnv *env); 92extern int register_android_hardware_SerialPort(JNIEnv *env); 93extern int register_android_hardware_SoundTrigger(JNIEnv *env); 94extern int register_android_hardware_UsbDevice(JNIEnv *env); 95extern int register_android_hardware_UsbDeviceConnection(JNIEnv *env); 96extern int register_android_hardware_UsbRequest(JNIEnv *env); 97extern int register_android_hardware_location_ActivityRecognitionHardware(JNIEnv* env); 98 99extern int register_android_media_AudioRecord(JNIEnv *env); 100extern int register_android_media_AudioSystem(JNIEnv *env); 101extern int register_android_media_AudioTrack(JNIEnv *env); 102extern int register_android_media_JetPlayer(JNIEnv *env); 103extern int register_android_media_ToneGenerator(JNIEnv *env); 104 105namespace android { 106 107/* 108 * JNI-based registration functions. Note these are properly contained in 109 * namespace android. 110 */ 111extern int register_android_app_admin_SecurityLog(JNIEnv* env); 112extern int register_android_content_AssetManager(JNIEnv* env); 113extern int register_android_util_EventLog(JNIEnv* env); 114extern int register_android_util_Log(JNIEnv* env); 115extern int register_android_util_MemoryIntArray(JNIEnv* env); 116extern int register_android_util_PathParser(JNIEnv* env); 117extern int register_android_content_StringBlock(JNIEnv* env); 118extern int register_android_content_XmlBlock(JNIEnv* env); 119extern int register_android_graphics_Canvas(JNIEnv* env); 120extern int register_android_graphics_CanvasProperty(JNIEnv* env); 121extern int register_android_graphics_ColorFilter(JNIEnv* env); 122extern int register_android_graphics_DrawFilter(JNIEnv* env); 123extern int register_android_graphics_FontFamily(JNIEnv* env); 124extern int register_android_graphics_Matrix(JNIEnv* env); 125extern int register_android_graphics_Paint(JNIEnv* env); 126extern int register_android_graphics_Path(JNIEnv* env); 127extern int register_android_graphics_PathMeasure(JNIEnv* env); 128extern int register_android_graphics_Picture(JNIEnv*); 129extern int register_android_graphics_Region(JNIEnv* env); 130extern int register_android_graphics_SurfaceTexture(JNIEnv* env); 131extern int register_android_graphics_drawable_AnimatedVectorDrawable(JNIEnv* env); 132extern int register_android_graphics_drawable_VectorDrawable(JNIEnv* env); 133extern int register_android_graphics_pdf_PdfDocument(JNIEnv* env); 134extern int register_android_graphics_pdf_PdfEditor(JNIEnv* env); 135extern int register_android_graphics_pdf_PdfRenderer(JNIEnv* env); 136extern int register_android_view_DisplayEventReceiver(JNIEnv* env); 137extern int register_android_view_DisplayListCanvas(JNIEnv* env); 138extern int register_android_view_HardwareLayer(JNIEnv* env); 139extern int register_android_view_RenderNode(JNIEnv* env); 140extern int register_android_view_RenderNodeAnimator(JNIEnv* env); 141extern int register_android_view_Surface(JNIEnv* env); 142extern int register_android_view_SurfaceControl(JNIEnv* env); 143extern int register_android_view_SurfaceSession(JNIEnv* env); 144extern int register_android_view_TextureView(JNIEnv* env); 145extern int register_android_view_ThreadedRenderer(JNIEnv* env); 146extern int register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper(JNIEnv *env); 147extern int register_android_database_CursorWindow(JNIEnv* env); 148extern int register_android_database_SQLiteConnection(JNIEnv* env); 149extern int register_android_database_SQLiteGlobal(JNIEnv* env); 150extern int register_android_database_SQLiteDebug(JNIEnv* env); 151extern int register_android_nio_utils(JNIEnv* env); 152extern int register_android_os_Debug(JNIEnv* env); 153extern int register_android_os_GraphicsEnvironment(JNIEnv* env); 154extern int register_android_os_HwBinder(JNIEnv *env); 155extern int register_android_os_HwBlob(JNIEnv *env); 156extern int register_android_os_HwParcel(JNIEnv *env); 157extern int register_android_os_HwRemoteBinder(JNIEnv *env); 158extern int register_android_os_MessageQueue(JNIEnv* env); 159extern int register_android_os_Parcel(JNIEnv* env); 160extern int register_android_os_SELinux(JNIEnv* env); 161extern int register_android_os_VintfObject(JNIEnv *env); 162extern int register_android_os_VintfRuntimeInfo(JNIEnv *env); 163extern int register_android_os_seccomp(JNIEnv* env); 164extern int register_android_os_SystemProperties(JNIEnv *env); 165extern int register_android_os_SystemClock(JNIEnv* env); 166extern int register_android_os_Trace(JNIEnv* env); 167extern int register_android_os_FileObserver(JNIEnv *env); 168extern int register_android_os_UEventObserver(JNIEnv* env); 169extern int register_android_os_MemoryFile(JNIEnv* env); 170extern int register_android_os_SharedMemory(JNIEnv* env); 171extern int register_android_net_LocalSocketImpl(JNIEnv* env); 172extern int register_android_net_NetworkUtils(JNIEnv* env); 173extern int register_android_net_TrafficStats(JNIEnv* env); 174extern int register_android_text_AndroidCharacter(JNIEnv *env); 175extern int register_android_text_StaticLayout(JNIEnv *env); 176extern int register_android_text_AndroidBidi(JNIEnv *env); 177extern int register_android_opengl_classes(JNIEnv *env); 178extern int register_android_ddm_DdmHandleNativeHeap(JNIEnv *env); 179extern int register_android_server_NetworkManagementSocketTagger(JNIEnv* env); 180extern int register_android_backup_BackupDataInput(JNIEnv *env); 181extern int register_android_backup_BackupDataOutput(JNIEnv *env); 182extern int register_android_backup_FileBackupHelperBase(JNIEnv *env); 183extern int register_android_backup_BackupHelperDispatcher(JNIEnv *env); 184extern int register_android_app_backup_FullBackup(JNIEnv *env); 185extern int register_android_app_Activity(JNIEnv *env); 186extern int register_android_app_ActivityThread(JNIEnv *env); 187extern int register_android_app_ApplicationLoaders(JNIEnv *env); 188extern int register_android_app_NativeActivity(JNIEnv *env); 189extern int register_android_media_RemoteDisplay(JNIEnv *env); 190extern int register_android_util_jar_StrictJarFile(JNIEnv* env); 191extern int register_android_view_InputChannel(JNIEnv* env); 192extern int register_android_view_InputDevice(JNIEnv* env); 193extern int register_android_view_InputEventReceiver(JNIEnv* env); 194extern int register_android_view_InputEventSender(JNIEnv* env); 195extern int register_android_view_InputQueue(JNIEnv* env); 196extern int register_android_view_KeyCharacterMap(JNIEnv *env); 197extern int register_android_view_KeyEvent(JNIEnv* env); 198extern int register_android_view_MotionEvent(JNIEnv* env); 199extern int register_android_view_PointerIcon(JNIEnv* env); 200extern int register_android_view_VelocityTracker(JNIEnv* env); 201extern int register_android_content_res_ObbScanner(JNIEnv* env); 202extern int register_android_content_res_Configuration(JNIEnv* env); 203extern int register_android_animation_PropertyValuesHolder(JNIEnv *env); 204extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env); 205extern int register_com_android_internal_net_NetworkStatsFactory(JNIEnv *env); 206extern int register_com_android_internal_os_ClassLoaderFactory(JNIEnv* env); 207extern int register_com_android_internal_os_FuseAppLoop(JNIEnv* env); 208extern int register_com_android_internal_os_Zygote(JNIEnv *env); 209extern int register_com_android_internal_os_ZygoteInit(JNIEnv *env); 210extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env); 211 212static AndroidRuntime* gCurRuntime = NULL; 213 214/* 215 * Code written in the Java Programming Language calls here from main(). 216 */ 217static void com_android_internal_os_RuntimeInit_nativeFinishInit(JNIEnv* env, jobject clazz) 218{ 219 gCurRuntime->onStarted(); 220} 221 222static void com_android_internal_os_ZygoteInit_nativeZygoteInit(JNIEnv* env, jobject clazz) 223{ 224 gCurRuntime->onZygoteInit(); 225} 226 227static void com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup(JNIEnv* env, 228 jobject clazz, jboolean exitWithoutCleanup) 229{ 230 gCurRuntime->setExitWithoutCleanup(exitWithoutCleanup); 231} 232 233/* 234 * JNI registration. 235 */ 236 237int register_com_android_internal_os_RuntimeInit(JNIEnv* env) 238{ 239 const JNINativeMethod methods[] = { 240 { "nativeFinishInit", "()V", 241 (void*) com_android_internal_os_RuntimeInit_nativeFinishInit }, 242 { "nativeSetExitWithoutCleanup", "(Z)V", 243 (void*) com_android_internal_os_RuntimeInit_nativeSetExitWithoutCleanup }, 244 }; 245 return jniRegisterNativeMethods(env, "com/android/internal/os/RuntimeInit", 246 methods, NELEM(methods)); 247} 248 249int register_com_android_internal_os_ZygoteInit_nativeZygoteInit(JNIEnv* env) 250{ 251 const JNINativeMethod methods[] = { 252 { "nativeZygoteInit", "()V", 253 (void*) com_android_internal_os_ZygoteInit_nativeZygoteInit }, 254 }; 255 return jniRegisterNativeMethods(env, "com/android/internal/os/ZygoteInit", 256 methods, NELEM(methods)); 257} 258 259// ---------------------------------------------------------------------- 260 261/*static*/ JavaVM* AndroidRuntime::mJavaVM = NULL; 262 263AndroidRuntime::AndroidRuntime(char* argBlockStart, const size_t argBlockLength) : 264 mExitWithoutCleanup(false), 265 mArgBlockStart(argBlockStart), 266 mArgBlockLength(argBlockLength) 267{ 268 SkGraphics::Init(); 269 270 // Pre-allocate enough space to hold a fair number of options. 271 mOptions.setCapacity(20); 272 273 assert(gCurRuntime == NULL); // one per process 274 gCurRuntime = this; 275} 276 277AndroidRuntime::~AndroidRuntime() 278{ 279} 280 281/* 282 * Register native methods using JNI. 283 */ 284/*static*/ int AndroidRuntime::registerNativeMethods(JNIEnv* env, 285 const char* className, const JNINativeMethod* gMethods, int numMethods) 286{ 287 return jniRegisterNativeMethods(env, className, gMethods, numMethods); 288} 289 290void AndroidRuntime::setArgv0(const char* argv0, bool setProcName) { 291 if (setProcName) { 292 int len = strlen(argv0); 293 if (len < 15) { 294 pthread_setname_np(pthread_self(), argv0); 295 } else { 296 pthread_setname_np(pthread_self(), argv0 + len - 15); 297 } 298 } 299 memset(mArgBlockStart, 0, mArgBlockLength); 300 strlcpy(mArgBlockStart, argv0, mArgBlockLength); 301} 302 303status_t AndroidRuntime::callMain(const String8& className, jclass clazz, 304 const Vector<String8>& args) 305{ 306 JNIEnv* env; 307 jmethodID methodId; 308 309 ALOGD("Calling main entry %s", className.string()); 310 311 env = getJNIEnv(); 312 if (clazz == NULL || env == NULL) { 313 return UNKNOWN_ERROR; 314 } 315 316 methodId = env->GetStaticMethodID(clazz, "main", "([Ljava/lang/String;)V"); 317 if (methodId == NULL) { 318 ALOGE("ERROR: could not find method %s.main(String[])\n", className.string()); 319 return UNKNOWN_ERROR; 320 } 321 322 /* 323 * We want to call main() with a String array with our arguments in it. 324 * Create an array and populate it. 325 */ 326 jclass stringClass; 327 jobjectArray strArray; 328 329 const size_t numArgs = args.size(); 330 stringClass = env->FindClass("java/lang/String"); 331 strArray = env->NewObjectArray(numArgs, stringClass, NULL); 332 333 for (size_t i = 0; i < numArgs; i++) { 334 jstring argStr = env->NewStringUTF(args[i].string()); 335 env->SetObjectArrayElement(strArray, i, argStr); 336 } 337 338 env->CallStaticVoidMethod(clazz, methodId, strArray); 339 return NO_ERROR; 340} 341 342/* 343 * The VM calls this through the "exit" hook. 344 */ 345static void runtime_exit(int code) 346{ 347 gCurRuntime->exit(code); 348} 349 350/* 351 * The VM calls this through the "vfprintf" hook. 352 * 353 * We ignore "fp" and just write the results to the log file. 354 */ 355static void runtime_vfprintf(FILE* fp, const char* format, va_list ap) 356{ 357 LOG_PRI_VA(ANDROID_LOG_INFO, "vm-printf", format, ap); 358} 359 360/** 361 * The VM calls this when mutex contention debugging is enabled to 362 * determine whether or not the blocked thread was a "sensitive thread" 363 * for user responsiveness/smoothess. 364 * 365 * Our policy for this is whether or not we're tracing any StrictMode 366 * events on this thread (which we might've inherited via Binder calls 367 * into us) 368 */ 369static bool runtime_isSensitiveThread() { 370 IPCThreadState* state = IPCThreadState::selfOrNull(); 371 return state && state->getStrictModePolicy() != 0; 372} 373 374static int hasDir(const char* dir) 375{ 376 struct stat s; 377 int res = stat(dir, &s); 378 if (res == 0) { 379 return S_ISDIR(s.st_mode); 380 } 381 return 0; 382} 383 384static bool hasFile(const char* file) { 385 struct stat s; 386 int res = stat(file, &s); 387 if (res == 0) { 388 return S_ISREG(s.st_mode); 389 } 390 return false; 391} 392 393// Convenience wrapper over the property API that returns an 394// std::string. 395std::string getProperty(const char* key, const char* defaultValue) { 396 std::vector<char> temp(PROPERTY_VALUE_MAX); 397 const int len = property_get(key, &temp[0], defaultValue); 398 if (len < 0) { 399 return ""; 400 } 401 return std::string(&temp[0], len); 402} 403 404/* 405 * Read the persistent locale. Inspects the following system properties 406 * (in order) and returns the first non-empty property in the list : 407 * 408 * (1) persist.sys.locale 409 * (2) persist.sys.language/country/localevar (country and localevar are 410 * inspected iff. language is non-empty. 411 * (3) ro.product.locale 412 * (4) ro.product.locale.language/region 413 * 414 * Note that we need to inspect persist.sys.language/country/localevar to 415 * preserve language settings for devices that are upgrading from Lollipop 416 * to M. The same goes for ro.product.locale.language/region as well. 417 */ 418const std::string readLocale() 419{ 420 const std::string locale = getProperty("persist.sys.locale", ""); 421 if (!locale.empty()) { 422 return locale; 423 } 424 425 const std::string language = getProperty("persist.sys.language", ""); 426 if (!language.empty()) { 427 const std::string country = getProperty("persist.sys.country", ""); 428 const std::string variant = getProperty("persist.sys.localevar", ""); 429 430 std::string out = language; 431 if (!country.empty()) { 432 out = out + "-" + country; 433 } 434 435 if (!variant.empty()) { 436 out = out + "-" + variant; 437 } 438 439 return out; 440 } 441 442 const std::string productLocale = getProperty("ro.product.locale", ""); 443 if (!productLocale.empty()) { 444 return productLocale; 445 } 446 447 // If persist.sys.locale and ro.product.locale are missing, 448 // construct a locale value from the individual locale components. 449 const std::string productLanguage = getProperty("ro.product.locale.language", "en"); 450 const std::string productRegion = getProperty("ro.product.locale.region", "US"); 451 452 return productLanguage + "-" + productRegion; 453} 454 455void AndroidRuntime::addOption(const char* optionString, void* extraInfo) 456{ 457 JavaVMOption opt; 458 opt.optionString = optionString; 459 opt.extraInfo = extraInfo; 460 mOptions.add(opt); 461} 462 463/* 464 * Parse a property containing space-separated options that should be 465 * passed directly to the VM, e.g. "-Xmx32m -verbose:gc -Xregenmap". 466 * 467 * This will cut up "extraOptsBuf" as we chop it into individual options. 468 * 469 * If "quotingArg" is non-null, it is passed before each extra option in mOptions. 470 * 471 * Adds the strings, if any, to mOptions. 472 */ 473void AndroidRuntime::parseExtraOpts(char* extraOptsBuf, const char* quotingArg) 474{ 475 char* start = extraOptsBuf; 476 char* end = NULL; 477 while (*start != '\0') { 478 while (*start == ' ') /* skip leading whitespace */ 479 start++; 480 if (*start == '\0') /* was trailing ws, bail */ 481 break; 482 483 end = start+1; 484 while (*end != ' ' && *end != '\0') /* find end of token */ 485 end++; 486 if (*end == ' ') 487 *end++ = '\0'; /* mark end, advance to indicate more */ 488 489 if (quotingArg != NULL) { 490 addOption(quotingArg); 491 } 492 addOption(start); 493 start = end; 494 } 495} 496 497/* 498 * Reads a "property" into "buffer" with a default of "defaultArg". If 499 * the property is non-empty, it is treated as a runtime option such 500 * as "-Xmx32m". 501 * 502 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx". 503 * 504 * If an argument is found, it is added to mOptions. 505 * 506 * If an option is found, it is added to mOptions and true is 507 * returned. Otherwise false is returned. 508 */ 509bool AndroidRuntime::parseRuntimeOption(const char* property, 510 char* buffer, 511 const char* runtimeArg, 512 const char* defaultArg) 513{ 514 strcpy(buffer, runtimeArg); 515 size_t runtimeArgLen = strlen(runtimeArg); 516 property_get(property, buffer+runtimeArgLen, defaultArg); 517 if (buffer[runtimeArgLen] == '\0') { 518 return false; 519 } 520 addOption(buffer); 521 return true; 522} 523 524/* 525 * Reads a "property" into "buffer". If the property is non-empty, it 526 * is treated as a dex2oat compiler option that should be 527 * passed as a quoted option, e.g. "-Ximage-compiler-option --compiler-filter=assume-verified". 528 * 529 * The "compilerArg" is a prefix for the option such as "--compiler-filter=". 530 * 531 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option". 532 * 533 * If an option is found, it is added to mOptions and true is 534 * returned. Otherwise false is returned. 535 */ 536bool AndroidRuntime::parseCompilerOption(const char* property, 537 char* buffer, 538 const char* compilerArg, 539 const char* quotingArg) 540{ 541 strcpy(buffer, compilerArg); 542 size_t compilerArgLen = strlen(compilerArg); 543 property_get(property, buffer+compilerArgLen, ""); 544 if (buffer[compilerArgLen] == '\0') { 545 return false; 546 } 547 addOption(quotingArg); 548 addOption(buffer); 549 return true; 550} 551 552/* 553 * Reads a "property" into "buffer". If the property is non-empty, it 554 * is treated as a dex2oat compiler runtime option that should be 555 * passed as a quoted option, e.g. "-Ximage-compiler-option 556 * --runtime-arg -Ximage-compiler-option -Xmx32m". 557 * 558 * The "runtimeArg" is a prefix for the option such as "-Xms" or "-Xmx". 559 * 560 * The "quotingArg" should be "-Ximage-compiler-option" or "-Xcompiler-option". 561 * 562 * If an option is found, it is added to mOptions and true is 563 * returned. Otherwise false is returned. 564 */ 565bool AndroidRuntime::parseCompilerRuntimeOption(const char* property, 566 char* buffer, 567 const char* runtimeArg, 568 const char* quotingArg) 569{ 570 strcpy(buffer, runtimeArg); 571 size_t runtimeArgLen = strlen(runtimeArg); 572 property_get(property, buffer+runtimeArgLen, ""); 573 if (buffer[runtimeArgLen] == '\0') { 574 return false; 575 } 576 addOption(quotingArg); 577 addOption("--runtime-arg"); 578 addOption(quotingArg); 579 addOption(buffer); 580 return true; 581} 582 583/* 584 * Start the Dalvik Virtual Machine. 585 * 586 * Various arguments, most determined by system properties, are passed in. 587 * The "mOptions" vector is updated. 588 * 589 * CAUTION: when adding options in here, be careful not to put the 590 * char buffer inside a nested scope. Adding the buffer to the 591 * options using mOptions.add() does not copy the buffer, so if the 592 * buffer goes out of scope the option may be overwritten. It's best 593 * to put the buffer at the top of the function so that it is more 594 * unlikely that someone will surround it in a scope at a later time 595 * and thus introduce a bug. 596 * 597 * Returns 0 on success. 598 */ 599int AndroidRuntime::startVm(JavaVM** pJavaVM, JNIEnv** pEnv, bool zygote) 600{ 601 JavaVMInitArgs initArgs; 602 char propBuf[PROPERTY_VALUE_MAX]; 603 char stackTraceFileBuf[sizeof("-Xstacktracefile:")-1 + PROPERTY_VALUE_MAX]; 604 char jniOptsBuf[sizeof("-Xjniopts:")-1 + PROPERTY_VALUE_MAX]; 605 char heapstartsizeOptsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX]; 606 char heapsizeOptsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX]; 607 char heapgrowthlimitOptsBuf[sizeof("-XX:HeapGrowthLimit=")-1 + PROPERTY_VALUE_MAX]; 608 char heapminfreeOptsBuf[sizeof("-XX:HeapMinFree=")-1 + PROPERTY_VALUE_MAX]; 609 char heapmaxfreeOptsBuf[sizeof("-XX:HeapMaxFree=")-1 + PROPERTY_VALUE_MAX]; 610 char usejitOptsBuf[sizeof("-Xusejit:")-1 + PROPERTY_VALUE_MAX]; 611 char jitmaxsizeOptsBuf[sizeof("-Xjitmaxsize:")-1 + PROPERTY_VALUE_MAX]; 612 char jitinitialsizeOptsBuf[sizeof("-Xjitinitialsize:")-1 + PROPERTY_VALUE_MAX]; 613 char jitthresholdOptsBuf[sizeof("-Xjitthreshold:")-1 + PROPERTY_VALUE_MAX]; 614 char useJitProfilesOptsBuf[sizeof("-Xjitsaveprofilinginfo:")-1 + PROPERTY_VALUE_MAX]; 615 char jitprithreadweightOptBuf[sizeof("-Xjitprithreadweight:")-1 + PROPERTY_VALUE_MAX]; 616 char jittransitionweightOptBuf[sizeof("-Xjittransitionweight:")-1 + PROPERTY_VALUE_MAX]; 617 char hotstartupsamplesOptsBuf[sizeof("-Xps-hot-startup-method-samples:")-1 + PROPERTY_VALUE_MAX]; 618 char gctypeOptsBuf[sizeof("-Xgc:")-1 + PROPERTY_VALUE_MAX]; 619 char backgroundgcOptsBuf[sizeof("-XX:BackgroundGC=")-1 + PROPERTY_VALUE_MAX]; 620 char heaptargetutilizationOptsBuf[sizeof("-XX:HeapTargetUtilization=")-1 + PROPERTY_VALUE_MAX]; 621 char cachePruneBuf[sizeof("-Xzygote-max-boot-retry=")-1 + PROPERTY_VALUE_MAX]; 622 char dex2oatXmsImageFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX]; 623 char dex2oatXmxImageFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX]; 624 char dex2oatXmsFlagsBuf[sizeof("-Xms")-1 + PROPERTY_VALUE_MAX]; 625 char dex2oatXmxFlagsBuf[sizeof("-Xmx")-1 + PROPERTY_VALUE_MAX]; 626 char dex2oatCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX]; 627 char dex2oatImageCompilerFilterBuf[sizeof("--compiler-filter=")-1 + PROPERTY_VALUE_MAX]; 628 char dex2oatThreadsBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX]; 629 char dex2oatThreadsImageBuf[sizeof("-j")-1 + PROPERTY_VALUE_MAX]; 630 char dex2oat_isa_variant_key[PROPERTY_KEY_MAX]; 631 char dex2oat_isa_variant[sizeof("--instruction-set-variant=") -1 + PROPERTY_VALUE_MAX]; 632 char dex2oat_isa_features_key[PROPERTY_KEY_MAX]; 633 char dex2oat_isa_features[sizeof("--instruction-set-features=") -1 + PROPERTY_VALUE_MAX]; 634 char dex2oatFlagsBuf[PROPERTY_VALUE_MAX]; 635 char dex2oatImageFlagsBuf[PROPERTY_VALUE_MAX]; 636 char extraOptsBuf[PROPERTY_VALUE_MAX]; 637 char voldDecryptBuf[PROPERTY_VALUE_MAX]; 638 enum { 639 kEMDefault, 640 kEMIntPortable, 641 kEMIntFast, 642 kEMJitCompiler, 643 } executionMode = kEMDefault; 644 char localeOption[sizeof("-Duser.locale=") + PROPERTY_VALUE_MAX]; 645 char lockProfThresholdBuf[sizeof("-Xlockprofthreshold:")-1 + PROPERTY_VALUE_MAX]; 646 char nativeBridgeLibrary[sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX]; 647 char cpuAbiListBuf[sizeof("--cpu-abilist=") + PROPERTY_VALUE_MAX]; 648 char methodTraceFileBuf[sizeof("-Xmethod-trace-file:") + PROPERTY_VALUE_MAX]; 649 char methodTraceFileSizeBuf[sizeof("-Xmethod-trace-file-size:") + PROPERTY_VALUE_MAX]; 650 char fingerprintBuf[sizeof("-Xfingerprint:") + PROPERTY_VALUE_MAX]; 651 652 bool checkJni = false; 653 property_get("dalvik.vm.checkjni", propBuf, ""); 654 if (strcmp(propBuf, "true") == 0) { 655 checkJni = true; 656 } else if (strcmp(propBuf, "false") != 0) { 657 /* property is neither true nor false; fall back on kernel parameter */ 658 property_get("ro.kernel.android.checkjni", propBuf, ""); 659 if (propBuf[0] == '1') { 660 checkJni = true; 661 } 662 } 663 ALOGV("CheckJNI is %s\n", checkJni ? "ON" : "OFF"); 664 if (checkJni) { 665 /* extended JNI checking */ 666 addOption("-Xcheck:jni"); 667 668 /* with -Xcheck:jni, this provides a JNI function call trace */ 669 //addOption("-verbose:jni"); 670 } 671 672 property_get("dalvik.vm.execution-mode", propBuf, ""); 673 if (strcmp(propBuf, "int:portable") == 0) { 674 executionMode = kEMIntPortable; 675 } else if (strcmp(propBuf, "int:fast") == 0) { 676 executionMode = kEMIntFast; 677 } else if (strcmp(propBuf, "int:jit") == 0) { 678 executionMode = kEMJitCompiler; 679 } 680 681 // If dalvik.vm.stack-trace-dir is set, it enables the "new" stack trace 682 // dump scheme and a new file is created for each stack dump. If it isn't set, 683 // the old scheme is enabled. 684 property_get("dalvik.vm.stack-trace-dir", propBuf, ""); 685 if (strlen(propBuf) > 0) { 686 addOption("-Xusetombstonedtraces"); 687 } else { 688 parseRuntimeOption("dalvik.vm.stack-trace-file", stackTraceFileBuf, "-Xstacktracefile:"); 689 } 690 691 strcpy(jniOptsBuf, "-Xjniopts:"); 692 if (parseRuntimeOption("dalvik.vm.jniopts", jniOptsBuf, "-Xjniopts:")) { 693 ALOGI("JNI options: '%s'\n", jniOptsBuf); 694 } 695 696 /* route exit() to our handler */ 697 addOption("exit", (void*) runtime_exit); 698 699 /* route fprintf() to our handler */ 700 addOption("vfprintf", (void*) runtime_vfprintf); 701 702 /* register the framework-specific "is sensitive thread" hook */ 703 addOption("sensitiveThread", (void*) runtime_isSensitiveThread); 704 705 /* enable verbose; standard options are { jni, gc, class } */ 706 //addOption("-verbose:jni"); 707 addOption("-verbose:gc"); 708 //addOption("-verbose:class"); 709 710 /* 711 * The default starting and maximum size of the heap. Larger 712 * values should be specified in a product property override. 713 */ 714 parseRuntimeOption("dalvik.vm.heapstartsize", heapstartsizeOptsBuf, "-Xms", "4m"); 715 parseRuntimeOption("dalvik.vm.heapsize", heapsizeOptsBuf, "-Xmx", "16m"); 716 717 parseRuntimeOption("dalvik.vm.heapgrowthlimit", heapgrowthlimitOptsBuf, "-XX:HeapGrowthLimit="); 718 parseRuntimeOption("dalvik.vm.heapminfree", heapminfreeOptsBuf, "-XX:HeapMinFree="); 719 parseRuntimeOption("dalvik.vm.heapmaxfree", heapmaxfreeOptsBuf, "-XX:HeapMaxFree="); 720 parseRuntimeOption("dalvik.vm.heaptargetutilization", 721 heaptargetutilizationOptsBuf, 722 "-XX:HeapTargetUtilization="); 723 724 /* 725 * JIT related options. 726 */ 727 parseRuntimeOption("dalvik.vm.usejit", usejitOptsBuf, "-Xusejit:"); 728 parseRuntimeOption("dalvik.vm.jitmaxsize", jitmaxsizeOptsBuf, "-Xjitmaxsize:"); 729 parseRuntimeOption("dalvik.vm.jitinitialsize", jitinitialsizeOptsBuf, "-Xjitinitialsize:"); 730 parseRuntimeOption("dalvik.vm.jitthreshold", jitthresholdOptsBuf, "-Xjitthreshold:"); 731 property_get("dalvik.vm.usejitprofiles", useJitProfilesOptsBuf, ""); 732 if (strcmp(useJitProfilesOptsBuf, "true") == 0) { 733 addOption("-Xjitsaveprofilinginfo"); 734 } 735 736 parseRuntimeOption("dalvik.vm.jitprithreadweight", 737 jitprithreadweightOptBuf, 738 "-Xjitprithreadweight:"); 739 740 parseRuntimeOption("dalvik.vm.jittransitionweight", 741 jittransitionweightOptBuf, 742 "-Xjittransitionweight:"); 743 744 /* 745 * Profile related options. 746 */ 747 parseRuntimeOption("dalvik.vm.hot-startup-method-samples", hotstartupsamplesOptsBuf, 748 "-Xps-hot-startup-method-samples:"); 749 750 property_get("ro.config.low_ram", propBuf, ""); 751 if (strcmp(propBuf, "true") == 0) { 752 addOption("-XX:LowMemoryMode"); 753 } 754 755 parseRuntimeOption("dalvik.vm.gctype", gctypeOptsBuf, "-Xgc:"); 756 parseRuntimeOption("dalvik.vm.backgroundgctype", backgroundgcOptsBuf, "-XX:BackgroundGC="); 757 758 /* 759 * Enable debugging only for apps forked from zygote. 760 * Set suspend=y to pause during VM init and use android ADB transport. 761 */ 762 if (zygote) { 763 addOption("-agentlib:jdwp=transport=dt_android_adb,suspend=n,server=y"); 764 } 765 766 parseRuntimeOption("dalvik.vm.lockprof.threshold", 767 lockProfThresholdBuf, 768 "-Xlockprofthreshold:"); 769 770 if (executionMode == kEMIntPortable) { 771 addOption("-Xint:portable"); 772 } else if (executionMode == kEMIntFast) { 773 addOption("-Xint:fast"); 774 } else if (executionMode == kEMJitCompiler) { 775 addOption("-Xint:jit"); 776 } 777 778 // If we are booting without the real /data, don't spend time compiling. 779 property_get("vold.decrypt", voldDecryptBuf, ""); 780 bool skip_compilation = ((strcmp(voldDecryptBuf, "trigger_restart_min_framework") == 0) || 781 (strcmp(voldDecryptBuf, "1") == 0)); 782 783 // Extra options for boot.art/boot.oat image generation. 784 parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xms", dex2oatXmsImageFlagsBuf, 785 "-Xms", "-Ximage-compiler-option"); 786 parseCompilerRuntimeOption("dalvik.vm.image-dex2oat-Xmx", dex2oatXmxImageFlagsBuf, 787 "-Xmx", "-Ximage-compiler-option"); 788 if (skip_compilation) { 789 addOption("-Ximage-compiler-option"); 790 addOption("--compiler-filter=assume-verified"); 791 } else { 792 parseCompilerOption("dalvik.vm.image-dex2oat-filter", dex2oatImageCompilerFilterBuf, 793 "--compiler-filter=", "-Ximage-compiler-option"); 794 } 795 796 // If there is a boot profile, it takes precedence over the image and preloaded classes. 797 if (hasFile("/system/etc/boot-image.prof")) { 798 addOption("-Ximage-compiler-option"); 799 addOption("--profile-file=/system/etc/boot-image.prof"); 800 addOption("-Ximage-compiler-option"); 801 addOption("--compiler-filter=speed-profile"); 802 } else { 803 // Make sure there is a preloaded-classes file. 804 if (!hasFile("/system/etc/preloaded-classes")) { 805 ALOGE("Missing preloaded-classes file, /system/etc/preloaded-classes not found: %s\n", 806 strerror(errno)); 807 return -1; 808 } 809 addOption("-Ximage-compiler-option"); 810 addOption("--image-classes=/system/etc/preloaded-classes"); 811 812 // If there is a compiled-classes file, push it. 813 if (hasFile("/system/etc/compiled-classes")) { 814 addOption("-Ximage-compiler-option"); 815 addOption("--compiled-classes=/system/etc/compiled-classes"); 816 } 817 818 // If there is a dirty-image-objects file, push it. 819 if (hasFile("/system/etc/dirty-image-objects")) { 820 addOption("-Ximage-compiler-option"); 821 addOption("--dirty-image-objects=/system/etc/dirty-image-objects"); 822 } 823 } 824 825 property_get("dalvik.vm.image-dex2oat-flags", dex2oatImageFlagsBuf, ""); 826 parseExtraOpts(dex2oatImageFlagsBuf, "-Ximage-compiler-option"); 827 828 // Extra options for DexClassLoader. 829 parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xms", dex2oatXmsFlagsBuf, 830 "-Xms", "-Xcompiler-option"); 831 parseCompilerRuntimeOption("dalvik.vm.dex2oat-Xmx", dex2oatXmxFlagsBuf, 832 "-Xmx", "-Xcompiler-option"); 833 if (skip_compilation) { 834 addOption("-Xcompiler-option"); 835 addOption("--compiler-filter=assume-verified"); 836 837 // We skip compilation when a minimal runtime is brought up for decryption. In that case 838 // /data is temporarily backed by a tmpfs, which is usually small. 839 // If the system image contains prebuilts, they will be relocated into the tmpfs. In this 840 // specific situation it is acceptable to *not* relocate and run out of the prebuilts 841 // directly instead. 842 addOption("--runtime-arg"); 843 addOption("-Xnorelocate"); 844 } else { 845 parseCompilerOption("dalvik.vm.dex2oat-filter", dex2oatCompilerFilterBuf, 846 "--compiler-filter=", "-Xcompiler-option"); 847 } 848 parseCompilerOption("dalvik.vm.dex2oat-threads", dex2oatThreadsBuf, "-j", "-Xcompiler-option"); 849 parseCompilerOption("dalvik.vm.image-dex2oat-threads", dex2oatThreadsImageBuf, "-j", 850 "-Ximage-compiler-option"); 851 852 // The runtime will compile a boot image, when necessary, not using installd. Thus, we need to 853 // pass the instruction-set-features/variant as an image-compiler-option. 854 // TODO: Find a better way for the instruction-set. 855#if defined(__arm__) 856 constexpr const char* instruction_set = "arm"; 857#elif defined(__aarch64__) 858 constexpr const char* instruction_set = "arm64"; 859#elif defined(__mips__) && !defined(__LP64__) 860 constexpr const char* instruction_set = "mips"; 861#elif defined(__mips__) && defined(__LP64__) 862 constexpr const char* instruction_set = "mips64"; 863#elif defined(__i386__) 864 constexpr const char* instruction_set = "x86"; 865#elif defined(__x86_64__) 866 constexpr const char* instruction_set = "x86_64"; 867#else 868 constexpr const char* instruction_set = "unknown"; 869#endif 870 // Note: it is OK to reuse the buffer, as the values are exactly the same between 871 // * compiler-option, used for runtime compilation (DexClassLoader) 872 // * image-compiler-option, used for boot-image compilation on device 873 874 // Copy the variant. 875 sprintf(dex2oat_isa_variant_key, "dalvik.vm.isa.%s.variant", instruction_set); 876 parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant, 877 "--instruction-set-variant=", "-Ximage-compiler-option"); 878 parseCompilerOption(dex2oat_isa_variant_key, dex2oat_isa_variant, 879 "--instruction-set-variant=", "-Xcompiler-option"); 880 // Copy the features. 881 sprintf(dex2oat_isa_features_key, "dalvik.vm.isa.%s.features", instruction_set); 882 parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features, 883 "--instruction-set-features=", "-Ximage-compiler-option"); 884 parseCompilerOption(dex2oat_isa_features_key, dex2oat_isa_features, 885 "--instruction-set-features=", "-Xcompiler-option"); 886 887 888 property_get("dalvik.vm.dex2oat-flags", dex2oatFlagsBuf, ""); 889 parseExtraOpts(dex2oatFlagsBuf, "-Xcompiler-option"); 890 891 /* extra options; parse this late so it overrides others */ 892 property_get("dalvik.vm.extra-opts", extraOptsBuf, ""); 893 parseExtraOpts(extraOptsBuf, NULL); 894 895 /* Set the properties for locale */ 896 { 897 strcpy(localeOption, "-Duser.locale="); 898 const std::string locale = readLocale(); 899 strncat(localeOption, locale.c_str(), PROPERTY_VALUE_MAX); 900 addOption(localeOption); 901 } 902 903 // Trace files are stored in /data/misc/trace which is writable only in debug mode. 904 property_get("ro.debuggable", propBuf, "0"); 905 if (strcmp(propBuf, "1") == 0) { 906 property_get("dalvik.vm.method-trace", propBuf, "false"); 907 if (strcmp(propBuf, "true") == 0) { 908 addOption("-Xmethod-trace"); 909 parseRuntimeOption("dalvik.vm.method-trace-file", 910 methodTraceFileBuf, 911 "-Xmethod-trace-file:"); 912 parseRuntimeOption("dalvik.vm.method-trace-file-siz", 913 methodTraceFileSizeBuf, 914 "-Xmethod-trace-file-size:"); 915 property_get("dalvik.vm.method-trace-stream", propBuf, "false"); 916 if (strcmp(propBuf, "true") == 0) { 917 addOption("-Xmethod-trace-stream"); 918 } 919 } 920 } 921 922 // Native bridge library. "0" means that native bridge is disabled. 923 property_get("ro.dalvik.vm.native.bridge", propBuf, ""); 924 if (propBuf[0] == '\0') { 925 ALOGW("ro.dalvik.vm.native.bridge is not expected to be empty"); 926 } else if (strcmp(propBuf, "0") != 0) { 927 snprintf(nativeBridgeLibrary, sizeof("-XX:NativeBridge=") + PROPERTY_VALUE_MAX, 928 "-XX:NativeBridge=%s", propBuf); 929 addOption(nativeBridgeLibrary); 930 } 931 932#if defined(__LP64__) 933 const char* cpu_abilist_property_name = "ro.product.cpu.abilist64"; 934#else 935 const char* cpu_abilist_property_name = "ro.product.cpu.abilist32"; 936#endif // defined(__LP64__) 937 property_get(cpu_abilist_property_name, propBuf, ""); 938 if (propBuf[0] == '\0') { 939 ALOGE("%s is not expected to be empty", cpu_abilist_property_name); 940 return -1; 941 } 942 snprintf(cpuAbiListBuf, sizeof(cpuAbiListBuf), "--cpu-abilist=%s", propBuf); 943 addOption(cpuAbiListBuf); 944 945 // Dalvik-cache pruning counter. 946 parseRuntimeOption("dalvik.vm.zygote.max-boot-retry", cachePruneBuf, 947 "-Xzygote-max-boot-retry="); 948 949 /* 950 * When running with debug.generate-debug-info, add --generate-debug-info to 951 * the compiler options so that the boot image, if it is compiled on device, 952 * will include native debugging information. 953 */ 954 property_get("debug.generate-debug-info", propBuf, ""); 955 if (strcmp(propBuf, "true") == 0) { 956 addOption("-Xcompiler-option"); 957 addOption("--generate-debug-info"); 958 addOption("-Ximage-compiler-option"); 959 addOption("--generate-debug-info"); 960 } 961 962 /* 963 * Retrieve the build fingerprint and provide it to the runtime. That way, ANR dumps will 964 * contain the fingerprint and can be parsed. 965 */ 966 parseRuntimeOption("ro.build.fingerprint", fingerprintBuf, "-Xfingerprint:"); 967 968 initArgs.version = JNI_VERSION_1_4; 969 initArgs.options = mOptions.editArray(); 970 initArgs.nOptions = mOptions.size(); 971 initArgs.ignoreUnrecognized = JNI_FALSE; 972 973 /* 974 * Initialize the VM. 975 * 976 * The JavaVM* is essentially per-process, and the JNIEnv* is per-thread. 977 * If this call succeeds, the VM is ready, and we can start issuing 978 * JNI calls. 979 */ 980 if (JNI_CreateJavaVM(pJavaVM, pEnv, &initArgs) < 0) { 981 ALOGE("JNI_CreateJavaVM failed\n"); 982 return -1; 983 } 984 985 return 0; 986} 987 988char* AndroidRuntime::toSlashClassName(const char* className) 989{ 990 char* result = strdup(className); 991 for (char* cp = result; *cp != '\0'; cp++) { 992 if (*cp == '.') { 993 *cp = '/'; 994 } 995 } 996 return result; 997} 998 999/** Create a Java string from an ASCII or Latin-1 string */ 1000jstring AndroidRuntime::NewStringLatin1(JNIEnv* env, const char* bytes) { 1001 if (!bytes) return NULL; 1002 int length = strlen(bytes); 1003 jchar* buffer = (jchar *)alloca(length * sizeof(jchar)); 1004 if (!buffer) return NULL; 1005 jchar* chp = buffer; 1006 for (int i = 0; i < length; i++) { 1007 *chp++ = *bytes++; 1008 } 1009 return env->NewString(buffer, length); 1010} 1011 1012 1013/* 1014 * Start the Android runtime. This involves starting the virtual machine 1015 * and calling the "static void main(String[] args)" method in the class 1016 * named by "className". 1017 * 1018 * Passes the main function two arguments, the class name and the specified 1019 * options string. 1020 */ 1021void AndroidRuntime::start(const char* className, const Vector<String8>& options, bool zygote) 1022{ 1023 ALOGD(">>>>>> START %s uid %d <<<<<<\n", 1024 className != NULL ? className : "(unknown)", getuid()); 1025 1026 static const String8 startSystemServer("start-system-server"); 1027 1028 /* 1029 * 'startSystemServer == true' means runtime is obsolete and not run from 1030 * init.rc anymore, so we print out the boot start event here. 1031 */ 1032 for (size_t i = 0; i < options.size(); ++i) { 1033 if (options[i] == startSystemServer) { 1034 /* track our progress through the boot sequence */ 1035 const int LOG_BOOT_PROGRESS_START = 3000; 1036 LOG_EVENT_LONG(LOG_BOOT_PROGRESS_START, ns2ms(systemTime(SYSTEM_TIME_MONOTONIC))); 1037 } 1038 } 1039 1040 const char* rootDir = getenv("ANDROID_ROOT"); 1041 if (rootDir == NULL) { 1042 rootDir = "/system"; 1043 if (!hasDir("/system")) { 1044 LOG_FATAL("No root directory specified, and /android does not exist."); 1045 return; 1046 } 1047 setenv("ANDROID_ROOT", rootDir, 1); 1048 } 1049 1050 //const char* kernelHack = getenv("LD_ASSUME_KERNEL"); 1051 //ALOGD("Found LD_ASSUME_KERNEL='%s'\n", kernelHack); 1052 1053 /* start the virtual machine */ 1054 JniInvocation jni_invocation; 1055 jni_invocation.Init(NULL); 1056 JNIEnv* env; 1057 if (startVm(&mJavaVM, &env, zygote) != 0) { 1058 return; 1059 } 1060 onVmCreated(env); 1061 1062 /* 1063 * Register android functions. 1064 */ 1065 if (startReg(env) < 0) { 1066 ALOGE("Unable to register all android natives\n"); 1067 return; 1068 } 1069 1070 /* 1071 * We want to call main() with a String array with arguments in it. 1072 * At present we have two arguments, the class name and an option string. 1073 * Create an array to hold them. 1074 */ 1075 jclass stringClass; 1076 jobjectArray strArray; 1077 jstring classNameStr; 1078 1079 stringClass = env->FindClass("java/lang/String"); 1080 assert(stringClass != NULL); 1081 strArray = env->NewObjectArray(options.size() + 1, stringClass, NULL); 1082 assert(strArray != NULL); 1083 classNameStr = env->NewStringUTF(className); 1084 assert(classNameStr != NULL); 1085 env->SetObjectArrayElement(strArray, 0, classNameStr); 1086 1087 for (size_t i = 0; i < options.size(); ++i) { 1088 jstring optionsStr = env->NewStringUTF(options.itemAt(i).string()); 1089 assert(optionsStr != NULL); 1090 env->SetObjectArrayElement(strArray, i + 1, optionsStr); 1091 } 1092 1093 /* 1094 * Start VM. This thread becomes the main thread of the VM, and will 1095 * not return until the VM exits. 1096 */ 1097 char* slashClassName = toSlashClassName(className != NULL ? className : ""); 1098 jclass startClass = env->FindClass(slashClassName); 1099 if (startClass == NULL) { 1100 ALOGE("JavaVM unable to locate class '%s'\n", slashClassName); 1101 /* keep going */ 1102 } else { 1103 jmethodID startMeth = env->GetStaticMethodID(startClass, "main", 1104 "([Ljava/lang/String;)V"); 1105 if (startMeth == NULL) { 1106 ALOGE("JavaVM unable to find main() in '%s'\n", className); 1107 /* keep going */ 1108 } else { 1109 env->CallStaticVoidMethod(startClass, startMeth, strArray); 1110 1111#if 0 1112 if (env->ExceptionCheck()) 1113 threadExitUncaughtException(env); 1114#endif 1115 } 1116 } 1117 free(slashClassName); 1118 1119 ALOGD("Shutting down VM\n"); 1120 if (mJavaVM->DetachCurrentThread() != JNI_OK) 1121 ALOGW("Warning: unable to detach main thread\n"); 1122 if (mJavaVM->DestroyJavaVM() != 0) 1123 ALOGW("Warning: VM did not shut down cleanly\n"); 1124} 1125 1126void AndroidRuntime::exit(int code) 1127{ 1128 if (mExitWithoutCleanup) { 1129 ALOGI("VM exiting with result code %d, cleanup skipped.", code); 1130 ::_exit(code); 1131 } else { 1132 ALOGI("VM exiting with result code %d.", code); 1133 onExit(code); 1134 ::exit(code); 1135 } 1136} 1137 1138void AndroidRuntime::onVmCreated(JNIEnv* env) 1139{ 1140 // If AndroidRuntime had anything to do here, we'd have done it in 'start'. 1141} 1142 1143/* 1144 * Get the JNIEnv pointer for this thread. 1145 * 1146 * Returns NULL if the slot wasn't allocated or populated. 1147 */ 1148/*static*/ JNIEnv* AndroidRuntime::getJNIEnv() 1149{ 1150 JNIEnv* env; 1151 JavaVM* vm = AndroidRuntime::getJavaVM(); 1152 assert(vm != NULL); 1153 1154 if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) 1155 return NULL; 1156 return env; 1157} 1158 1159/* 1160 * Makes the current thread visible to the VM. 1161 * 1162 * The JNIEnv pointer returned is only valid for the current thread, and 1163 * thus must be tucked into thread-local storage. 1164 */ 1165static int javaAttachThread(const char* threadName, JNIEnv** pEnv) 1166{ 1167 JavaVMAttachArgs args; 1168 JavaVM* vm; 1169 jint result; 1170 1171 vm = AndroidRuntime::getJavaVM(); 1172 assert(vm != NULL); 1173 1174 args.version = JNI_VERSION_1_4; 1175 args.name = (char*) threadName; 1176 args.group = NULL; 1177 1178 result = vm->AttachCurrentThread(pEnv, (void*) &args); 1179 if (result != JNI_OK) 1180 ALOGI("NOTE: attach of thread '%s' failed\n", threadName); 1181 1182 return result; 1183} 1184 1185/* 1186 * Detach the current thread from the set visible to the VM. 1187 */ 1188static int javaDetachThread(void) 1189{ 1190 JavaVM* vm; 1191 jint result; 1192 1193 vm = AndroidRuntime::getJavaVM(); 1194 assert(vm != NULL); 1195 1196 result = vm->DetachCurrentThread(); 1197 if (result != JNI_OK) 1198 ALOGE("ERROR: thread detach failed\n"); 1199 return result; 1200} 1201 1202/* 1203 * When starting a native thread that will be visible from the VM, we 1204 * bounce through this to get the right attach/detach action. 1205 * Note that this function calls free(args) 1206 */ 1207/*static*/ int AndroidRuntime::javaThreadShell(void* args) { 1208 void* start = ((void**)args)[0]; 1209 void* userData = ((void **)args)[1]; 1210 char* name = (char*) ((void **)args)[2]; // we own this storage 1211 free(args); 1212 JNIEnv* env; 1213 int result; 1214 1215 /* hook us into the VM */ 1216 if (javaAttachThread(name, &env) != JNI_OK) 1217 return -1; 1218 1219 /* start the thread running */ 1220 result = (*(android_thread_func_t)start)(userData); 1221 1222 /* unhook us */ 1223 javaDetachThread(); 1224 free(name); 1225 1226 return result; 1227} 1228 1229/* 1230 * This is invoked from androidCreateThreadEtc() via the callback 1231 * set with androidSetCreateThreadFunc(). 1232 * 1233 * We need to create the new thread in such a way that it gets hooked 1234 * into the VM before it really starts executing. 1235 */ 1236/*static*/ int AndroidRuntime::javaCreateThreadEtc( 1237 android_thread_func_t entryFunction, 1238 void* userData, 1239 const char* threadName, 1240 int32_t threadPriority, 1241 size_t threadStackSize, 1242 android_thread_id_t* threadId) 1243{ 1244 void** args = (void**) malloc(3 * sizeof(void*)); // javaThreadShell must free 1245 int result; 1246 1247 LOG_ALWAYS_FATAL_IF(threadName == nullptr, "threadName not provided to javaCreateThreadEtc"); 1248 1249 args[0] = (void*) entryFunction; 1250 args[1] = userData; 1251 args[2] = (void*) strdup(threadName); // javaThreadShell must free 1252 1253 result = androidCreateRawThreadEtc(AndroidRuntime::javaThreadShell, args, 1254 threadName, threadPriority, threadStackSize, threadId); 1255 return result; 1256} 1257 1258/* 1259 * Create a thread that is visible from the VM. 1260 * 1261 * This is called from elsewhere in the library. 1262 */ 1263/*static*/ android_thread_id_t AndroidRuntime::createJavaThread(const char* name, 1264 void (*start)(void *), void* arg) 1265{ 1266 android_thread_id_t threadId = 0; 1267 javaCreateThreadEtc((android_thread_func_t) start, arg, name, 1268 ANDROID_PRIORITY_DEFAULT, 0, &threadId); 1269 return threadId; 1270} 1271 1272#if 0 1273static void quickTest(void* arg) 1274{ 1275 const char* str = (const char*) arg; 1276 1277 printf("In quickTest: %s\n", str); 1278} 1279#endif 1280 1281#ifdef NDEBUG 1282 #define REG_JNI(name) { name } 1283 struct RegJNIRec { 1284 int (*mProc)(JNIEnv*); 1285 }; 1286#else 1287 #define REG_JNI(name) { name, #name } 1288 struct RegJNIRec { 1289 int (*mProc)(JNIEnv*); 1290 const char* mName; 1291 }; 1292#endif 1293 1294typedef void (*RegJAMProc)(); 1295 1296static int register_jni_procs(const RegJNIRec array[], size_t count, JNIEnv* env) 1297{ 1298 for (size_t i = 0; i < count; i++) { 1299 if (array[i].mProc(env) < 0) { 1300#ifndef NDEBUG 1301 ALOGD("----------!!! %s failed to load\n", array[i].mName); 1302#endif 1303 return -1; 1304 } 1305 } 1306 return 0; 1307} 1308 1309static const RegJNIRec gRegJNI[] = { 1310 REG_JNI(register_com_android_internal_os_RuntimeInit), 1311 REG_JNI(register_com_android_internal_os_ZygoteInit_nativeZygoteInit), 1312 REG_JNI(register_android_os_SystemClock), 1313 REG_JNI(register_android_util_EventLog), 1314 REG_JNI(register_android_util_Log), 1315 REG_JNI(register_android_util_MemoryIntArray), 1316 REG_JNI(register_android_util_PathParser), 1317 REG_JNI(register_android_app_admin_SecurityLog), 1318 REG_JNI(register_android_content_AssetManager), 1319 REG_JNI(register_android_content_StringBlock), 1320 REG_JNI(register_android_content_XmlBlock), 1321 REG_JNI(register_android_text_AndroidCharacter), 1322 REG_JNI(register_android_text_StaticLayout), 1323 REG_JNI(register_android_text_AndroidBidi), 1324 REG_JNI(register_android_view_InputDevice), 1325 REG_JNI(register_android_view_KeyCharacterMap), 1326 REG_JNI(register_android_os_Process), 1327 REG_JNI(register_android_os_SystemProperties), 1328 REG_JNI(register_android_os_Binder), 1329 REG_JNI(register_android_os_Parcel), 1330 REG_JNI(register_android_os_HwBinder), 1331 REG_JNI(register_android_os_HwBlob), 1332 REG_JNI(register_android_os_HwParcel), 1333 REG_JNI(register_android_os_HwRemoteBinder), 1334 REG_JNI(register_android_os_VintfObject), 1335 REG_JNI(register_android_os_VintfRuntimeInfo), 1336 REG_JNI(register_android_nio_utils), 1337 REG_JNI(register_android_graphics_Canvas), 1338 REG_JNI(register_android_graphics_Graphics), 1339 REG_JNI(register_android_view_DisplayEventReceiver), 1340 REG_JNI(register_android_view_RenderNode), 1341 REG_JNI(register_android_view_RenderNodeAnimator), 1342 REG_JNI(register_android_view_DisplayListCanvas), 1343 REG_JNI(register_android_view_HardwareLayer), 1344 REG_JNI(register_android_view_ThreadedRenderer), 1345 REG_JNI(register_android_view_Surface), 1346 REG_JNI(register_android_view_SurfaceControl), 1347 REG_JNI(register_android_view_SurfaceSession), 1348 REG_JNI(register_android_view_TextureView), 1349 REG_JNI(register_com_android_internal_view_animation_NativeInterpolatorFactoryHelper), 1350 REG_JNI(register_com_google_android_gles_jni_EGLImpl), 1351 REG_JNI(register_com_google_android_gles_jni_GLImpl), 1352 REG_JNI(register_android_opengl_jni_EGL14), 1353 REG_JNI(register_android_opengl_jni_EGLExt), 1354 REG_JNI(register_android_opengl_jni_GLES10), 1355 REG_JNI(register_android_opengl_jni_GLES10Ext), 1356 REG_JNI(register_android_opengl_jni_GLES11), 1357 REG_JNI(register_android_opengl_jni_GLES11Ext), 1358 REG_JNI(register_android_opengl_jni_GLES20), 1359 REG_JNI(register_android_opengl_jni_GLES30), 1360 REG_JNI(register_android_opengl_jni_GLES31), 1361 REG_JNI(register_android_opengl_jni_GLES31Ext), 1362 REG_JNI(register_android_opengl_jni_GLES32), 1363 1364 REG_JNI(register_android_graphics_Bitmap), 1365 REG_JNI(register_android_graphics_BitmapFactory), 1366 REG_JNI(register_android_graphics_BitmapRegionDecoder), 1367 REG_JNI(register_android_graphics_Camera), 1368 REG_JNI(register_android_graphics_CreateJavaOutputStreamAdaptor), 1369 REG_JNI(register_android_graphics_CanvasProperty), 1370 REG_JNI(register_android_graphics_ColorFilter), 1371 REG_JNI(register_android_graphics_DrawFilter), 1372 REG_JNI(register_android_graphics_FontFamily), 1373 REG_JNI(register_android_graphics_GraphicBuffer), 1374 REG_JNI(register_android_graphics_Interpolator), 1375 REG_JNI(register_android_graphics_MaskFilter), 1376 REG_JNI(register_android_graphics_Matrix), 1377 REG_JNI(register_android_graphics_Movie), 1378 REG_JNI(register_android_graphics_NinePatch), 1379 REG_JNI(register_android_graphics_Paint), 1380 REG_JNI(register_android_graphics_Path), 1381 REG_JNI(register_android_graphics_PathMeasure), 1382 REG_JNI(register_android_graphics_PathEffect), 1383 REG_JNI(register_android_graphics_Picture), 1384 REG_JNI(register_android_graphics_Region), 1385 REG_JNI(register_android_graphics_Shader), 1386 REG_JNI(register_android_graphics_SurfaceTexture), 1387 REG_JNI(register_android_graphics_Typeface), 1388 REG_JNI(register_android_graphics_YuvImage), 1389 REG_JNI(register_android_graphics_drawable_AnimatedVectorDrawable), 1390 REG_JNI(register_android_graphics_drawable_VectorDrawable), 1391 REG_JNI(register_android_graphics_pdf_PdfDocument), 1392 REG_JNI(register_android_graphics_pdf_PdfEditor), 1393 REG_JNI(register_android_graphics_pdf_PdfRenderer), 1394 1395 REG_JNI(register_android_database_CursorWindow), 1396 REG_JNI(register_android_database_SQLiteConnection), 1397 REG_JNI(register_android_database_SQLiteGlobal), 1398 REG_JNI(register_android_database_SQLiteDebug), 1399 REG_JNI(register_android_os_Debug), 1400 REG_JNI(register_android_os_FileObserver), 1401 REG_JNI(register_android_os_GraphicsEnvironment), 1402 REG_JNI(register_android_os_MessageQueue), 1403 REG_JNI(register_android_os_SELinux), 1404 REG_JNI(register_android_os_seccomp), 1405 REG_JNI(register_android_os_Trace), 1406 REG_JNI(register_android_os_UEventObserver), 1407 REG_JNI(register_android_net_LocalSocketImpl), 1408 REG_JNI(register_android_net_NetworkUtils), 1409 REG_JNI(register_android_net_TrafficStats), 1410 REG_JNI(register_android_os_MemoryFile), 1411 REG_JNI(register_android_os_SharedMemory), 1412 REG_JNI(register_com_android_internal_os_ClassLoaderFactory), 1413 REG_JNI(register_com_android_internal_os_Zygote), 1414 REG_JNI(register_com_android_internal_os_ZygoteInit), 1415 REG_JNI(register_com_android_internal_util_VirtualRefBasePtr), 1416 REG_JNI(register_android_hardware_Camera), 1417 REG_JNI(register_android_hardware_camera2_CameraMetadata), 1418 REG_JNI(register_android_hardware_camera2_legacy_LegacyCameraDevice), 1419 REG_JNI(register_android_hardware_camera2_legacy_PerfMeasurement), 1420 REG_JNI(register_android_hardware_camera2_DngCreator), 1421 REG_JNI(register_android_hardware_HardwareBuffer), 1422 REG_JNI(register_android_hardware_SensorManager), 1423 REG_JNI(register_android_hardware_SerialPort), 1424 REG_JNI(register_android_hardware_SoundTrigger), 1425 REG_JNI(register_android_hardware_UsbDevice), 1426 REG_JNI(register_android_hardware_UsbDeviceConnection), 1427 REG_JNI(register_android_hardware_UsbRequest), 1428 REG_JNI(register_android_hardware_location_ActivityRecognitionHardware), 1429 REG_JNI(register_android_media_AudioRecord), 1430 REG_JNI(register_android_media_AudioSystem), 1431 REG_JNI(register_android_media_AudioTrack), 1432 REG_JNI(register_android_media_JetPlayer), 1433 REG_JNI(register_android_media_RemoteDisplay), 1434 REG_JNI(register_android_media_ToneGenerator), 1435 1436 REG_JNI(register_android_opengl_classes), 1437 REG_JNI(register_android_server_NetworkManagementSocketTagger), 1438 REG_JNI(register_android_ddm_DdmHandleNativeHeap), 1439 REG_JNI(register_android_backup_BackupDataInput), 1440 REG_JNI(register_android_backup_BackupDataOutput), 1441 REG_JNI(register_android_backup_FileBackupHelperBase), 1442 REG_JNI(register_android_backup_BackupHelperDispatcher), 1443 REG_JNI(register_android_app_backup_FullBackup), 1444 REG_JNI(register_android_app_Activity), 1445 REG_JNI(register_android_app_ActivityThread), 1446 REG_JNI(register_android_app_ApplicationLoaders), 1447 REG_JNI(register_android_app_NativeActivity), 1448 REG_JNI(register_android_util_jar_StrictJarFile), 1449 REG_JNI(register_android_view_InputChannel), 1450 REG_JNI(register_android_view_InputEventReceiver), 1451 REG_JNI(register_android_view_InputEventSender), 1452 REG_JNI(register_android_view_InputQueue), 1453 REG_JNI(register_android_view_KeyEvent), 1454 REG_JNI(register_android_view_MotionEvent), 1455 REG_JNI(register_android_view_PointerIcon), 1456 REG_JNI(register_android_view_VelocityTracker), 1457 1458 REG_JNI(register_android_content_res_ObbScanner), 1459 REG_JNI(register_android_content_res_Configuration), 1460 1461 REG_JNI(register_android_animation_PropertyValuesHolder), 1462 REG_JNI(register_com_android_internal_content_NativeLibraryHelper), 1463 REG_JNI(register_com_android_internal_net_NetworkStatsFactory), 1464 REG_JNI(register_com_android_internal_os_FuseAppLoop), 1465}; 1466 1467/* 1468 * Register android native functions with the VM. 1469 */ 1470/*static*/ int AndroidRuntime::startReg(JNIEnv* env) 1471{ 1472 ATRACE_NAME("RegisterAndroidNatives"); 1473 /* 1474 * This hook causes all future threads created in this process to be 1475 * attached to the JavaVM. (This needs to go away in favor of JNI 1476 * Attach calls.) 1477 */ 1478 androidSetCreateThreadFunc((android_create_thread_fn) javaCreateThreadEtc); 1479 1480 ALOGV("--- registering native functions ---\n"); 1481 1482 /* 1483 * Every "register" function calls one or more things that return 1484 * a local reference (e.g. FindClass). Because we haven't really 1485 * started the VM yet, they're all getting stored in the base frame 1486 * and never released. Use Push/Pop to manage the storage. 1487 */ 1488 env->PushLocalFrame(200); 1489 1490 if (register_jni_procs(gRegJNI, NELEM(gRegJNI), env) < 0) { 1491 env->PopLocalFrame(NULL); 1492 return -1; 1493 } 1494 env->PopLocalFrame(NULL); 1495 1496 //createJavaThread("fubar", quickTest, (void*) "hello"); 1497 1498 return 0; 1499} 1500 1501AndroidRuntime* AndroidRuntime::getRuntime() 1502{ 1503 return gCurRuntime; 1504} 1505 1506/** 1507 * Used by surface flinger's DdmConnection to register native methods from 1508 * the framework. 1509 */ 1510extern "C" jint registerFrameworkNatives(JNIEnv* env) { 1511 return register_jni_procs(gRegJNI, NELEM(gRegJNI), env); 1512} 1513} // namespace android 1514